This will create a new cluster, create a database called “example”,
then tear it all down at the end; nothing will remain on disk. If you
want the cluster and its databases to remain on disk, pass
preserve=True to the ClusterFixture constructor.

From the command line

Once this package is installed, you’ll have a postgresfixture
script. Alternatively you can use python -m postgresfixture to
achieve the same thing. Use --help to discover the options
available to you.